package com.demo.spit.service;

import com.demo.spit.dao.SpitDao;
import com.demo.spit.pojo.Spit;
import entity.PageResult;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import util.IdWorker;

import java.util.List;

/**
 * Created by Administrator on 2020/6/29.
 */
@Service
@Transactional
public class SpitService {

    @Autowired
    private SpitDao spitDao;

    @Autowired
    private IdWorker idWorker;

    @Autowired
    private MongoTemplate mongoTemplate;

    public List<Spit> findAll(){
        return  spitDao.findAll();
    }

    public Spit findById(String id){
        return spitDao.findById(id).get();
    }

    public void save(Spit spit){
        spit.set_id(idWorker.nextId()+"");
         spitDao.save(spit);
    }

    public void update(Spit spit){
        spitDao.save(spit);
    }

    public void delete(String id){
        spitDao.deleteById(id);
    }

    public Page<Spit> findByParentid(String parentid,int page,int size){
        Pageable pageable = PageRequest.of(page-1,size);
        return spitDao.findByParentid(parentid, pageable);
    }

    public void thumbup(String spitId) {
        //方式一:效率有问题
//        Spit spit = spitDao.findById(spitId).get();
//        spit.setThumbup((spit.getThumbup() == null?0:spit.getThumbup())+1);
//        spitDao.save(spit);
        //使用mongo原生命令实现自增
        Query query = new Query();
        query.addCriteria(Criteria.where("_id").is(spitId));
        Update update = new Update();
        update.inc("thumbup",1);
        mongoTemplate.updateFirst(query,update,"spit");
    }
}
